The monograph is focused on considerations pertaining to containerization, namely the use of containers in maritime transport processes. Therefore, it is necessary to define a container as a loading unit in shipping processes (this topic dominates the substantive content of the second chapter). The chapter presents the principles of container standardization (type series) construction issues (with the consideration of technical conditions, endurance and safety conditions) and the taxonomical classification of containers with consideration of their specific use for shipping diversified types of cargo.